What screw barrel do I need for WPC extrusion?

You need a set built for abrasion and moisture. That means a bimetallic barrel surface for the wood and mineral fillers, deep channels with gentle compression so the wood does not scorch, and venting to pull moisture out of the melt. Match the geometry to your machine — conical and parallel twins both run WPC — and spec the surface for your real formula.

Why does WPC wear out a screw barrel so fast?

Wood flour acts like fine sandpaper inside the barrel. Many WPC formulas are half wood or more, and most add mineral fillers such as talc or calcium carbonate on top. The screw pushes that grinding mix against the barrel wall under pressure, hour after hour. Standard nitrided surfaces lose the fight early.

Do I need a vented barrel for WPC?

In most cases, yes — or a serious pre-drying setup. Wood soaks up moisture from the air, and that moisture turns to steam in the melt. Steam causes foaming, voids, and rough surfaces in the product. A vented barrel with vacuum pulls the moisture out during extrusion; pre-drying attacks it before the hopper.

Should I choose nitrided or bimetallic for WPC?

Bimetallic, in almost every case. WPC is one of the most abrasive materials in extrusion, and a nitrided case is thin by nature. A bimetallic barrel carries a separate wear alloy fused into the bore — on Nanhaiya barrels, a 2.5–3 mm tungsten-bearing layer at up to 62 HRC. On WPC duty, that layer pays for itself.

Can I run WPC on my existing PE screw?

You can, but the screw will pay for it. A PE screw has the wrong compression for a wood-filled mix, no venting for the moisture, and a surface that wood flour grinds down fast. Expect scorched product, rough surfaces, and a short screw life. WPC needs a screw designed for WPC.

How long does a screw barrel last on WPC?

Shorter than on clean resin — the wood and fillers see to that. The honest answer depends on your formula, output, and surface choice, so measure instead of guessing. Check flight OD and bore ID against your build drawing at least once a year, and log the readings. The trend tells you when to order the next set.

Can you make a replacement WPC screw barrel for my machine?

Yes. Nanhaiya builds WPC screw and barrel sets for conical twin, parallel twin, and single screw machines, compatible with major brands. Send your machine model, a drawing, or a worn sample, plus your WPC formula. You get a tailored quote within 12 hours.

Ntsia Hlau chim rau WPC Extrusion: Nres Ntoo-yas Hnav

WPC grinds txheem ntsia hlau chim cia ceev. Ntoo hmoov txiav zoo li ntawv xuab zeb, thiab cov pob zeb hauv av ua rau nws tsis zoo. Antsia hlau chim rau WPC extrusionxav tau peb yam: ib tug bimetallic hnav nto, maj mam compression uas melts cov yas tsis hlawv ntoo, thiab venting uas rub ya raws ntawm cov yaj. Spec cov peb, thiab cov txheej txheem kav. Hla lawv, thiab koj yuav cov ntsia hlau txhua xyoo.

WPC decking muag vim nws zoo li ntoo thiab kav ntev li yas. Cov ntsia hlau thiab lub thoob uas ua rau nws tsis muaj hmoo. Lawv sib ntaus cov ntawv xuab zeb txhua txoj haujlwm, txhua txoj haujlwm.

Peb tsim WPC screws thiab chim txhua lub lim tiam, yog li peb paub qhov twg lawv tuag ua ntej. Phau ntawv qhia no qhia koj tias vim li cas WPC hnav tawm, qhov kev xaiv tsim tawm tsam, thiab yuav xaj li casWPC ntsia hlau chimuas ciaj sia. Rau daim duab xaiv tag nrho, nyeem pebextruder ntsia hlau chim phau ntawv qhia.

Vim li cas WPC Destroys Standard Screw Barrels

Piav dab tsi tshwm sim hauv lub thoob. Cov ntsia hlau squeezes ib tug sib tov ntawm yas thiab ntoo hmoov av tiv thaiv lub chim phab ntsa. Lub siab nce, thiab cov khoom tawv tawv txhuam cov hlau nrog txhua qhov tig.

Ntxuav PE los yog PP swb los ntawm thiab NW nyuam qhuav kos rau saum npoo. WPC rub nws. Qhov ntawd yog tag nrho cov teeb meem hauv ib kab lus - thiab txhua qhov kev xaiv tsim hauv qab no muaj los tawm tsam nws.

Kev hnav tsom mus rau qhov chaw siab tshaj plaws: thaj chaw hloov pauv thiab lub davhlau ya mus. Ib qho hnav ris tsho xau yaj rov qab hla lub davhlau. Cov khoom tso tawm poob, zoo drifts, thiab kab poob nyiaj ntev ua ntej cov ntsia hlau zoo li tsis zoo.

Dab tsi yog hauv WPC, thiab Vim Li Cas Nws Sib Tsoo Hlau

WPC muab cov yas - feem ntau PE, PP, lossis PVC - nrog ntoo hmoov lossis ntoo fiber ntau. Ntoo feem ntau ua rau ib nrab ntawm kev sib xyaw lossis ntau dua. Feem ntau cov qauv kuj ntxiv cov ntxhia ntxiv xws li talc lossis calcium carbonate, ntxiv rau pigments thiab coupling agents.

Txhua cov khoom xyaw ntxiv nws tus kheej tawm tsam:

Ntoo hmoovscours nto zoo li cov ntawv xuab zeb zoo nyob rau hauv siab.
Mineral fillersyog tawv dua ntoo thiab zom ntxaum.
Pigmentsxws li titanium dioxide ntxiv tseem ntxiv abrasion.
Moisture nyob rau hauv ntooflashes rau chav thiab tawm tsam zoo (nqe tom ntej).

Ntxiv nws, thiab WPC nyob rau hauv cov khoom siv abrasive tshaj plaws hauv extrusion. Spec lub chim rau qhov kev muaj tiag, tsis yog rau lub tshuab ntxuav lub tshuab khiav xyoo tas los.

Conical twin screw barrel for WPC and board extrusion by Nanhaiya

Moisture: Kev Sib Tw Zaum Ob

Ntoo nqus dej los ntawm huab cua. Yas tsis tu; lub yaj ua. Trapped noo noo hloov mus rau chav hauv lub thoob thiab nyob twj ywm hauv cov khoom.

Qhov tshwm sim tshwm sim tam sim ntawd: foamed cores, voids, ntxhib nto, thiab tsis muaj zog profiles. Cov neeg siv khoom tsis lees txais cov boards uas zoo li ntawd. Tsis muaj ntsia hlau geometry kho qhov teeb meem ntawm chav.

Koj muaj ob yam riam phom, thiab ntau kab siv ob qho tib si. Qhuav ntoo hmoov ua ntej nws nkag mus rau hauv lub hopper. Tom qab ntawd tso lub thoob - lub tshuab nqus tsev qhov chaw rub tawm cov dej ntws tawm ntawm cov yaj thaum lub sij hawm extrusion. Vented chim yog tus qauv ntawm WPC kab loj vim li no.

Thaum tshav kub kub: Melt lub yas, tsis txhob hlawv ntoo

Ntawm no yog WPC lub ntxiab: cov yas xav tau cua sov kom yaj, tab sis ntoo chars ntawm qhov kub thiab txias ntau cov yas shrug tawm. Cov ntsia hlau yuav tsum yaj ib qho khoom xyaw yam tsis ua rau lwm tus.

Thawb lub shear nyuaj heev thiab ntoo scorches. Scorched ntoo qhia raws li xim av streaks thiab tsaus specks nyob rau hauv qhov profile. Nws kuj tseem ua rau lub rooj tsavxwm tsis muaj zog, vim tias cov khoom siv hluav taws xob hlawv tsis zoo nrog cov yas.

Kev txhim kho nyob rau hauv cov ntsia hlau tsim: maj mam compression, nruab nrab ceev, thiab nruj tswj kub. Peb phau ntawv qhia compression piv piav qhia txog kev lag luam tawm hauv qhov tob.

Lub Ntsia Hlau Tsim Dab Tsi WPC Xav Tau?

Muab peb qhov kev sib ntaus sib tua ua ke - puas, ya raws, cua sov - thiab WPC ntsia hlau tsim sau nws tus kheej:

Cov channel sib sib zog nqus.Lawv txav cov ntoo loj, fluffy sib tov rau pem hauv ntej yam tsis tau ntim nws nyuaj dhau ntxov.
Maj mam compression.Txaus kom yaj cov yas, yeej tsis txaus kom scorch ntoo.
Ib thaj tsam cua.Nqus venting rub tawm cov pa thiab volatiles mid- chim.
Kev sib tov zoo, qis shear.Ntoo yuav tsum kis tusyees los ntawm yaj tsis raug ntaus.
Ib qho tawv tawv.Ntxiv mus - qhov kev xaiv no txiav txim siab ntev npaum li cas lub teeb nyob.

Tshuab hom tseem ceeb heev. Conical thiab parallel twin screws ob leeg khiav WPC profile zoo; qhov kev xaiv nyob ntawm cov zis thiab cov qauv. Pebconical vs parallel phau ntawv qhiataug kev los ntawm nws.

Nitrided los yog Bimetallic? Xaiv ib qhov chaw uas ciaj sia

Cov lus nug saum npoo txiav txim siab lub teeb lub neej, yog li kho nws raws li qhov xwm txheej tseem ceeb. Nov yog qhov sib piv ncaj ncees rau WPC lub luag haujlwm:

Nto	Nws ua haujlwm li cas	Ntawm WPC lub luag haujlwm
Nitrided (38CrMoAlA)	Nitrogen hardens cov ntaub ntawv nyias ntawm cov hlau	Ntoo thiab fillers grind los ntawm cov ntaub ntawv nyias thaum ntxov. Fine rau huv resin; outmatched ntawm no
Bimetallic	Ib tug nyias hnav alloy fuses rau hauv lub bore - millimeters tuab, tsis nyias nyias	Cov lus teb yog rau WPC. Carbide-nplua nuj alloys tiv thaiv kev sib tsoo; txheej txheej kav ntau xyoo, tsis yog hli

Ntawm peb cov thoob bimetallic, cov txheej txheem alloy khiav 2.5-3 mm sib sib zog nqus nrog tungsten ntxiv. Peb harden lub bore mus rau 62 HRC, qhov ntau tus neeg muag khoom nres ntawm 58. Ntawm cov khoom no abrasive, cov ntsiab lus ntxiv tseem ceeb.

Kev txiav txim sai, raws li kev khiav:

Koj lub mis puas muaj cov hmoov nplej lossis cov ntxhia pob zeb?WPC ib txwm ua. → Koj xav tau qhov tawv tawv.

Puas yog ntoo ib nrab ntawm kev sib xyaw lossis ntau dua, lossis koj puas ua haujlwm siab?→ Bimetallic chim, carbide-nplua nuj alloy.

Puas yog koj cov qauv siv PVC ua lub hauv paus?→ Ntxiv corrosion kuj - ib qho kev xaiv nickel-bearing alloy.

Kev sib piv tag nrho, suav nrog tus nqi logic, nyob hauv pebbimetallic vs nitrided phau ntawv qhia. Lub hauv paus steel xaiv zaum hauv cov ntaub ntawv qhia.

Hnav cov cim ntawm WPC Kab

WPC hnav cov txheej txheem sai dua li cov khoom siv huv huv, yog li saib xyuas cov teeb liab. Tau txais lawv ntxov, thiab koj hloov ntawm koj lub sijhawm tsis yog thaum lub sijhawm tawg.

Tso zis poobntawm tib lub ntsia hlau ceev. Melt leaks rov qab los ntawm hnav ya davhlau.
Scorch marks rov qab lostxawm tias tom qab ntxuav. Hnav clearance shears lub melt harder thiab ntxiab khoom nyob rau hauv qhov chaw tuag.
Nto zoo drifts.Rough boards thiab streaks taw tes ntawm ya raws los yog hnav - feem ntau ob qho tib si.
Cov ntsia hlau noj amps.Nce lub cev muaj zog load ntawm tas li tso zis teeb liab loj hlob kuj.

Paub meej nrog lub micrometer, tsis yog hunch. Ntsuas davhlau OD thiab bore ID tiv thaiv koj daim duab tsim tsawg kawg ib xyoos ib zaug ntawm WPC lub luag haujlwm. Peb phau ntawv qhia kev ntsuas qhia txhua kauj ruam, thiab phau ntawv qhia kev saib xyuas npog cov cwj pwm uas ua rau qhov hnav tsis zoo.

Yuav Thov Li Cas WPC Screw Barrel

Ib nqe lus zoo pib nrog cov tswv yim zoo. Xa koj cov neeg tsim khoom rau xya yam khoom no:

Tshuab ua thiab qauv- conical ntxaib, parallel ntxaib, los yog ib tug ntsia hlau.
Screw txoj kab uas hla thiab L / D, los yog daim duab qub.
Koj tus qauv WPC- puag yas, ntoo cov ntsiab lus, fillers, pigments. Qhov no tsav qhov chaw xaiv.
Ntoo ya raws- ua ntej qhuav, vented, los yog ob qho tib si.
Cov khoom- decking, laj kab, board, profile.
Lub hom phiaj tso zisthiab cov ntsiab lus mob tam sim no.
Ib qho piv txwv hnav lossis ntsuas, yog tias koj hloov lub teeb.

Nrog rau cov nyob hauv tes, tus tsim teeb tsa lub geometry, tsim lub qhov cua, thiab xaiv cov hlau rau koj cov qauv tiag. Guesswork tawm ntawm qhov kev tsocai - thiab qhov ua tsis tiav thaum ntxov tawm nrog nws.

Vim Li Cas Ua Haujlwm Nrog Nanhaiya

Peb tsim screws thiab chim rau WPC decking thiab profile kab txhua lub lim tiam. Txoj hauj lwm ntawd tau qhia peb qhov twg WPC tua cov teeb, thiab yuav ua li cas tsim cov uas kav ntev.

Txhua txheej yog machined hauv 38CrMoAlA, 42CrMo, SKD-61, los yog stainless hlau. Rau WPC peb haum bimetallic bores nrog 2.5-3 hli tungsten-cov kabmob alloy txheej, hardened rau 62 HRC. Peb tsimparallel ntxaib, conical ntxaib, thiab ib qho ntsia hlau teeb, ntxiv rauhloovtau tshaj lub tshuab hom loj.

Xa koj lub tshuab qauv thiab WPC qauv. Koj tau txais cov lus pom zoo thiab hais lus hauv 12 teev.

Khiav WPC thiab nkees ntawm kev hloov cov khaub ncaws hnav? Xa koj lub tshuab qauv thiab cov qauv - tau txais lub taub hau ntsia hlau ua rau ntoo-yas, hais hauv 12 teev.

Tau txais WPC Barrel Quote

Cov lus nug nquag

Kuv xav tau dab tsi lub taub hau rau WPC extrusion?

Ib qho ua rau kev puas tsuaj thiab ya raws. Qhov ntawd txhais tau hais tias ib qho bimetallic hnav nto, sib sib zog nqus channel nrog maj mam compression, thiab venting kom rub ya raws. Sib piv cov geometry rau koj lub tshuab, thiab spec qhov saum npoo rau koj cov qauv tiag.

Vim li cas WPC hnav tawm lub taub hau taub hau sai heev?

Ntoo hmoov ua zoo li cov ntawv xuab zeb zoo hauv lub thoob. Ntau cov qauv khiav ib nrab ntoo lossis ntau dua, ntxiv rau cov pob zeb hauv av rau saum. Cov ntsia hlau nias uas sib tsoo sib xyaw rau ntawm phab ntsa tag nrho ua haujlwm ntev. Nyias nitrided nto plam kev sib ntaus thaum ntxov.

Kuv puas xav tau ib lub vented chim rau WPC?

Feem ntau, yog - lossis hnyav ua ntej ziab, thiab ntau kab siv ob qho tib si. Ntoo tuav cov dej noo, thiab noo noo hloov mus rau chav hauv yaj. Chav ua rau foaming, voids, thiab boards ntxhib. Lub tshuab nqus tsev nqus rub nws tawm thaum extrusion.

Kuv puas yuav tsum xaiv nitrided lossis bimetallic rau WPC?

Bimetallic, yuav luag txhua rooj plaub. Ib rooj plaub nitrided yog nyias, thiab WPC grinds los ntawm nws thaum ntxov. Peb cov thoob bimetallic nqa 2.5-3 hli tungsten-cov kabmob alloy txheej ntawm mus txog 62 HRC. Ntawm WPC lub luag haujlwm, txheej ntawd them rau nws tus kheej.

Kuv puas tuaj yeem khiav WPC ntawm kuv cov ntsia hlau PE uas twb muaj lawm?

Koj ua tau, tab sis cov ntsia hlau them rau nws. Tsis zoo compression, tsis muaj qhov cua, thiab qhov chaw mos ntxiv rau cov khoom scorched thiab lub neej luv. WPC xav tau ib tug ntsia hlau tsim rau WPC.

Lub taub hau taub hau ntev npaum li cas ntawm WPC?

Luv luv dua ntawm cov cob huv huv - cov fillers pom rau qhov ntawd. Cov lus teb tiag yog nyob ntawm koj cov qauv, cov zis, thiab qhov chaw xaiv. Yog li ntsuas: xyuas lub davhlau OD thiab bore ID tiv thaiv kev tsim teeb duab txhua xyoo, thiab teev cov qauv.

Koj puas tuaj yeem hloov WPC ntsia hlau chim rau kuv lub tshuab?

Yog lawm. Peb tsim WPC teeb rau conical ntxaib, sib npaug ntxaib, thiab ib lub tshuab ntsia hlau, sib xws nrog cov hom loj. Xa koj lub tshuab qauv, kos duab lossis hnav cov qauv, thiab cov qauv - koj tau txais ib nqe lus hauv 12 teev.